African Zoology volume 48, issue 1, P109-114 2013 DOI: 10.3377/004.048.0117 View full text
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Adrian M. Shrader, Julie F. Post, Nicole Hagenah, Philip W. Bateman

Abstract: A key benefit and evolutionary driver of group living is reduced predation risk. In white rhinos, groups comprise adult females, their calves and one to six unrelated subadults. Subadults benefit from group living through exposure to novel areas, and protection from territorial males (i.e. 'buddy system'). In contrast, it is unclear whether mothers benefit from group living. To determine if they benefit, or if there is simply no cost, we recorded the vigilance of white rhino mothers in different-sized groups.…

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